"Tim Lippe has no idea what he's in for when he's sent to Cedar Rapids, Iowa to represent his company at an annual insurance convention, where he soon finds himself under the """"guidance"""" of three convention veterans."

Dave is a married man with three kids and a loving wife, and Mitch is a single man who is at the prime of his sexual life. One fateful night while Mitch and Dave are peeing in a fountain, lightning strikes and they switch bodies.

Two years after the bachelor party in Las Vegas, Phil, Stu, Alan, and Doug jet to Thailand for Stu's wedding. Stu's plan for a subdued pre-wedding brunch, however, goes seriously awry.

High-strung father-to-be Peter Highman is forced to hitch a ride with aspiring actor Ethan Tremblay on a road trip in order to make it to his child's birth on time.